Oar brake



2 Sheets-Sheet 1.

(No Model.)

J. HAHN. GAR BRAKE.

n ...n....ZZ-.nnn

Patented Mar. 18.189,0'.

NA PETERS Photlllwgnplwr, Wallington. D. C.

(No Model.) 2 Sheets-Sheet 2.

J. HAHN.

- y GAR BRAKE. No. 423,557. PatentedMar. 18, 1890.

.WITNESSES Y M/ENTER.-

UNITED STATES PATENT OFFICE.

JOHN HAHN, OF NEW YORK, N. Y.

'CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 423,557, dated March 18, 1890.

I Application led August 16 1889. Serial No. 320,970. (No model.)

. T all whom, it may concern,.-

Be it known that l, JOHN HAHN, of New York city, New York, have invented an Improved Car-Brake, of which the following is a specification.

This invention relates to a car-brake oper- Y ated either by cables that are drawn taut or relaxed by suitable power mechanism on the motor or by a hand-wheel. A 1o It consists in the various features of improvement more fully pointed out in the claims.

In the accompanying drawings, Figure 1 is a sectional side elevation of a car-truck pror 5 vided with my improvement. Fig. 2 is abottom view thereof, and Fig. 3 a sectional end view thereof. y

The letter a represents the platform of a car, from whichprojects downwardly a socket 2o b, that receives a screw-rod c. To this screwrod there is pivoted one end of a brake-lever d, and this fixed end may be adjusted by being raised or lowered byfirst taking it off the screw-rod and then turning the latter in its 2 5 socket. To the lever d there is bolted a strong spring e, and to the free end of this spring there is connected the mechanism for raising and lowering the free end of the leverin order to apply or take of the brake. This mech- `3o anism is described further below. To the lever d there is swiveled by pin d a bar d2, to which are secured the brake-shoes da. These brake-'shoes engage shoulders d4 on the axles d5. Within the concave working-surface of each brake-shoe there is secured one end of a curved spring d, which is depressed as soon as the shoe is raised suiciently against the axle. 'lhe spring d6 when depressed operates a push-button d?, which opens a lubricat- 4o ing-chamber de, and thus allows the lubricant to ilow `out upon the working-surfaces. The

o means foroperating the free end of the brakelever so as to raise or lower the brakes by hand are as follows:

fis a hand-brake shaft, upon which is keyed a gear wheel f', engaging a gear--wheel f 2, fast upon a screw-shaft f3. By turning the wheel f2 the shaft f3 is raised or lowered. The shaft fs is connected to the spring e, to thus raise 5o or lower the brake-lever. I prefer to place upon the brake-shaft f a split spring-sleeve g, to which the hand-brake wheel-g is attached.

The shaft f is provided with a pin f4, that engages a slot g2 of sleeve g. When the brakewheel is revolved, the slot will bear against the pin and revolve the brake-shaft. It will be seen that the sleeve and brake-wheel may be lowered, so as to be entirely out of the way. When in its lowermost position, the brakewheel is received by a recess g3 in the beam 6o of the platform. l

The means for operating the brake directly from the motor consist of two rods or cables h d, both of which may loe drawn taut or relaxed by suitable mechanism upon the motor and which form no part of the present invention. To the cable h there is secured a rack h', engaging a pinion hupon the4 brake* shaft f. Thus when the cable is drawn taut the rack h is moved to revolve pinion h2, 7o which in turn revolves the shaft f. The shaft f, by pinions f f2, raises the shaft f3 'to in turn raise the brake-lever.

When the brakes are to be taken off, the cable is drawn tant and the cable h is relaxed. 7 5 The cable is connected tothe opposite or rear end of cable h by means of a chain j, running over fixed pulley j. When tension is applied to cable t', it will move cable h in the opposite direction to revolve pinion h2 i-n 8o the opposite direction. Thus the brake-lever will be lowered and the brake-shoes will be taken olf.

Of course the improvement herein described should be applied to both trucks of a car. The brakes on one of the trucks are used with the motor coupled to oneend, whiley the brakes on the other truck are used with the motor coupled to the other end. In the drawings, the cables m fn. are used for operat- 9o ing the brakes on the truck. (Not sh'own.)

p is a spring which aids the' cable z' in taking off the brakes. The brake-lever when depressed, may also be used as a switch, signal,

and gate-setting device by bearing upon suity able mechanism that operates said switch, signal, or gate.

What I claim is- 1. The combination of a truck with a brakelever pivoted thereto at one end and with'a Ico to, and with the. shoes d3- upon said bar, and

with springs el, push-buttons C17, and lubricating-chamber d8, substantially as specified.

4. The combination of a ear with a brakelever pvoted thereto at one end and provided with a spring` e at its free end, and with a shaft f 3, connected to said spring, and with a brakeshaft f, and a train of gearing for transmitting motion from said brake-shaft to shaft f3,'substantially as specied.

5. The combination-of brake-shaft f, having pin f4, with a sliding slotted sleeve g,`surrounding shaft f, and with brake-Wheel g', secured to nsaid sleeve, substantiallyas specied.

6. The combination ofy cable 71, With a rack h secured thereto, a train of gearing revolved by the rack, a shaft f3, revolved by the gearing, and with a pivoted lever d, operated by said shaft., substantially as' speeied.

7 The combination of cable h, having rack 7L', With train of gearing and with a shaft f3 revolved thereby, and with a levercl, operated by said shaft, and with ealole i, chain j, and pulley j for reversing the rack, substantially as specified.

JOHN HAHN.

Witnesses:

F. v BRIESEN, GEO. V. HANN. 

